I am celiac as well as medical vegan. I live with an omnivore that can eat anything and we have segregated cooking utensils and pantry.
I would definitely offer you some home brew beer; then start you with the nice vegan thai macNcheese I have posted elsewhere... no dairy and no wheat but plenty of carbs and reads well as a comfort food. Winter squash fried in coconut oil, will give you some fats. A vegan mushroom burger (I also posted it elsewhere here) made with diced portabella mushrooms and served on a gluten free bun can also give fats. A salad including chickpeas (fiber and protein) and a cashew based dressing. With the meal probably a hot cashew milk with carob and maple syrup, vanilla, cinnamon, and nutmeg. Also adding chia seeds and pureed pumpkin seeds to bring up the nutrients as well. My offerings
should give you 30-40 grams of net protein, or more than a hamburger; so that should satisfy the protein need. Carbs offered for the feeling of fullness. And lots of good other things in everything.
I am able to get chickpea pasta, and by making my own vegan butter and cheese, can bring up those protein levels. So the pasta used in the macNcheese would probably be the chickpea, and again, I would get you a good solid 40 grams of equivalent protein that should serve your day end need to feed yourself. The soy I use for the cheese base is GMO free and gluten free certified grown on a family farm in Iowa; their rotation crop is corn. If you are not one of the few that are as allergic to corn as celiacs are to wheat, then you should be able to eat at my table, and leave it happy. I make a very good gluten free vegan bread, and you would probably get it fresh from the
oven, as that is when it tastes the best. The vegan butter comes out pretty good to the butter taste, just has a sweet note that is different than butter.
I use my suffering better half hubby as a guinea pig for some of these foods and he agrees they are good, what I would be offering. Some meals I share and he eats what I do, and he is a meat and potatoes man (I was that way before...). If your vegan friend leans heavily on the legumes, and makes you a fresh loaf of bread, offers you some carbs, you should feel full and be ready to work after that digests some.
A woman vegan over 50 needs at least 46 grams of protein a day, more if she works hard every day or has celiac, which reduces the ability to take in nutrients. In three meals and three snacks I handily provide myself more than that. I chose the above menu for the heavy protein items I normally eat, that would provide a younger active man an amount of protein he would need as part of his daily intake.
Chickpeas are wonderful things, as is chickpea flour. Another high ranker is raw organic cashews. If you must feed an omnivore, or are an omnivore sitting at a vegan table, look to these two to help bridge the gap.
Portabella or any other mushroom are just little flavor sponges, just like tofu, and can be really versatile. They can also give a mouth feel more like meat, important for the omnivore or the recently converted vegan. Some Bragg's Aminos, or Sanji-Ya gluten free reduced sodium soy sauce, can do a lot to getting a meat flavor into a flavor sponge. Liquid Smoke is also technically gluten free and vegan, and can be used for flavoring.
I could use a nice strapping fellow here for a week, and can feed three meals and three snacks a day, beer, I need to start another batch as soon as the hops vine decides to do it's thing. (Side note, a hops vine is GREAT for covering over eyesores like rotty fences, and can block out your neighbors well). I notice this thread is several months old so hopefully the issue has been resolved.